Yellow to red basic dyes.



UNITED S ME OFFICE- WALTER KoivIG, orimnsnnn, GERMANY, nss IerNoR To FABBENEABRIKEN vomvr.

FRIEDR. BAYER & 00., or ELBERFELD, GERMANI QQB POQAIIQN or GERMANY,

ELLOW T RED BASIC DYES.

No Drawing.

Tooll whom it may concern:

Be it known that I, WALTER KoNIe, cloctor of technical arts, chemist, citizen of the German Empire, residing at Dresden, Germany, have invented new and useful Improvements in Basic Dye, of which the following is a specification.

* In the application for Letters Patent Ser;

No.465,108 it is stated that phenmorpholins,

I phenmorpholins, especially phenmorpholin and its substitution products either with aldehydes of the following general formula:

alk

(ar: meaning aryl; alkzalkyl; X, Y, Z: hydrogen or other substituents) or the respective oxims or hydrazones, or by condensing aldehydes or oxims or hydrazones of theabove given formula wherein means the residue of phenmorpholins or their substitution roducts with secondary aromatic amins. T e new products exist in two isomeric forms of different shades, e. 9. according to the following formulae:

(ar meaning aryl; alkzalkyl and X an acid radical). v

Patented some, i910.

Application filed, February re, 1909; Serial no. 478,281. i

(0:) Oompozmds of'the the Annalen, der Ckemie v0l. 338, p. 133 itis shown that the pyridin'dyestuffs obtainable from secondary aromatic amine with an open side-chain (e; g. monomethylanilimf split off one moleculeof amin by treatment with alkali es, aldehydes of the formula g g alk N H/C O ?H o o,

being formed.

morpholins, especially phenmorpholin and I its substitution products in the presence of aclds, red dyestuffs being obtained. The

same products areobtainedon using the oxim's' or hydrazones, semicarbazones, semioxamaznes, benzhydrazids and aminoguanidins of these aldehydes. H v

(b) Oompounds of the Formulaflr flhese compounds can be obtained by condensing with secondary aromatic amins'the aldehydes of the formula:

Y z i (X, Y, Z=hydrogen or any substituents,

meaning the a residue of a, phemnorpholin;

These aldehydjesfcan be;obtainedcibytreating;

the dyestufl's of theearlier application Ser. No. 465103 with alkalies. The dyestufis of this kind have a yellower shade than those described under (a).

The new dyes are reddish products soluble inv hot wat'er with a reddish color, and dyeing tanned cotton from yellow to red shades.

In order to illustrate the new. process more fully the following examples are given, the parts being equal by weight:

Example 1.-In a flask provided with a reflux condenser 1.87 parts of the aldehyde F ormula; J

These aldehydes can be easily condensed with one molecule of phen- (described A rmaZen der Chem/6 vol. 338, I

p. 127) of the formula:

CHB\NC=C/C:C\C:O 03/ H/ (M. P. 79) are heated on the water-bath for about 4 hours with 5 parts of alcohol, 2 parts of acetic acid (30 .per cent.) and 1.61

o more.

parts of methylphenmorpholin until the red color of the mixture does not change any The alcohol is then distilled-0E and the residue is introduced into water containing hydrochloric acid and common salt. The new dye separates in the shape of microscopic red needles which are filtered off and dried. It is easily soluble in alcohol and in hot water with a red color and dyes tanned cotton a very clear scarlet shade fast to washing and to light.

On using the oxim of the aldehyde P. 117) or the phenylhydrazone P. 141) the same dyestufl is obtained as described in Example 1. Substitution products of the aldehyde generally furnish bluer dyes. Thus one can use e. g. the aldehyde:

CH a which aldehyde can be obtained by treatment with alkalies of the pyridin dyestutf obtainable from methylphenmorpholin (see appl. Ser. No. 465103) are heated on the water-bath for several hours with 5 parts of alcohol, 1 part of acetic acid (60per cent.) and 1.33 parts of tetrahydroquinolin.

The mixture is then treated as described under Example 1. The dye crystallizes in the shape of microscopic needles of a green luster dyeing tanned cotton clear scarletred shades.

Instead of tetrahydroquinolin any other secondary aromatic amins e. g. monomethylanilin, monoethylanilin, etc., may be used. Scarlet-red dyes are obtained from these amms. V

Having now described my invention and in what manner the same is to be performed, what I claim as new and desire to secure by Letters Patent is 1. The herein-described new basic dyestuffs being derived from phenmorpholins, which dyes are crystalline reddish products soluble in hot water with a reddish color, and dyeing tanned cotton from yellow to red shades, substantially as described.

2. The herein-described new basic dyestufis obtainable from the aldehyde and methylphenmorpholin, which crystallizes in the shape of red needles, which are soluble in hot water with a red color, and which dyes tanned cotton a clear scarlet shade, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WALTER KoNIG.

WVitnesses:

HARRY A. MCBRIDE, PAUL ARRAs. 

